Nearby Words

Cardinality

[kahr-dn-al-i-tee] Origin

car·di·nal·i·ty

[kahr-dn-al-i-tee]
noun, plural -ties. Mathematics.
(of a set) the cardinal number indicating the number of elements in the set.

Origin:
1930–35; cardinal + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To Cardinality

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Cardinality is always a great word to know.
So is cube root. Does it mean:
a quantity of which a given quantity is the cube
the product obtained by multiplying a quantity by itself one or more times, the exponent of an expression
Collins
World English Dictionary
cardinality (ˌkɑːdɪˈnælɪtɪ)
 
n
1.  maths the property of possessing a cardinal number
2.  maths, logic (of a class) the cardinal number associated with the given class. Two classes have the same cardinality if they can be put in one-to-one correspondence

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

cardinality
1520s, "condition of being a cardinal," from cardinal (q.v.) + -ity. Mathematical sense is from 1935.
Online Etymology Dictionary, © 2010 Douglas Harper
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FOLDOC
Computing Dictionary

cardinality definition

mathematics
The number of elements in a set. If two sets have the same number of elements (i.e. there is a bijection between them) then they have the same cardinality. A cardinality is thus an isomorphism class in the category of sets.
aleph 0 is defined as the cardinality of the first infinite ordinal, omega (the number of natural numbers).
(1995-03-29)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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